DE102013204084A1 - Vapor extraction mechanism e.g. trough ventilation device for suction of vapor of stove in kitchen, has operating mechanism provided with force transmission element which is arranged on axles displaced parallel to rotational axis - Google Patents

Abstract

The vapor extraction mechanism (1) has a locking element (11) that is rotatably supported in a region of intake opening (10) around a rotational axis for temporary closing/locking of the intake opening. An operating element (30) is provided for the actuation of the locking element. The operating element is connected with the locking element through an operating mechanism. The operating mechanism is provided with a force transmission element which is arranged on axles which are displaced parallel to the rotational axis.

Description

The invention relates to a fume extraction device, in particular a depression ventilation device.

In extractor devices, in particular in Muldenlüftungen, which are also referred to as table vents, an air inlet is provided in the vicinity of the hearth or workplace in the work surface, can enter through the air in the extractor device. For this purpose, a fan is provided below the cooking field level. This fan creates a vacuum, through which the air is sucked from the stove or workplace. In such extractor devices, it is known to provide the air inlet, which is also referred to as the suction port, with a closing element. As a result, the suction opening can be closed, in particular, when the extractor device is not in operation, thus preventing the entry of contaminants into the extractor device. A kind of a closing element is for example in the DE 10 2007 002 241 A1 described. Here, the closing element, which can represent a straight or curved closing element, is rotated about the axis of rotation by means of a rotary shaft of the closing element arranged rotary wheel to bring this to the suction port or to remove from the suction port and thus to open or close.

A disadvantage of this prior art is that the same movement of the rotary wheel by the user is required for a given movement of the closing element.

Object of the present invention is therefore to provide a fume extraction device in which the suction can be closed or opened reliably in a simple manner at least temporarily reliable.

The invention is based on the finding that this object can be achieved by providing an actuating mechanism, by means of which a large movement of the closing element can be achieved even with slight movement of an actuating element. This actuating mechanism is realized erfindungemäß by mechanical components.

The object is therefore achieved by a fume extraction device, in particular trough ventilation device, with at least one suction opening, at least one closing element for at least temporarily closing the suction opening, which is rotatably mounted in the region of the suction opening about an axis of rotation, and an actuating element for actuating the closing element. The extractor device is characterized in that the actuating element is connected via an actuating mechanism with the closing element and the actuating mechanism has at least one force transmission element which is arranged on an axis which is offset parallel to the axis of rotation of the closing element.

In the context of the invention, a vapor extraction device is understood in particular to be a vapor extraction device for sucking out fumes and vapors from a stove or another workstation in a kitchen. Preferably, the vapor extraction device is understood to be a hollow ventilation device, which will also be referred to below as a tray ventilator or table ventilator. Such a hollow ventilator is characterized in that it is sucked in by air from the stove or hob or in the region of the cooker or hob and is directed downwards, preferably vertically downwards, from the suction opening, via which the air enters the extractor device. The suction opening is located in these well ventilators preferably in the horizontal and is adjacent to the stove, the hob, the hob or the workplace arranged.

As closure element, which is also referred to below as a closure element, is understood in the context of the present invention, an element by means of which a suction port of a fume extractor can be completely covered at least temporarily and in particular closed. The suction opening of the extractor device according to the invention is understood to be the opening through which air can enter the extractor device when the closing element is not provided. The suction opening preferably represents an elongated opening, in particular a rectangular opening. In the flow direction behind the suction opening and in the case of tray fans, thus under the suction opening, at least one filter element is preferably provided. At the extractor device according to the invention can be provided a plurality of suction. In this case, at least one and preferably exactly one closing element is provided in each intake opening.

As an actuating element for actuating the closing element according to the invention an operating element is designated, which can be operated by the user of the extractor device. As an operation of the closing element is understood in the context of the invention, a moving, in particular the rotation of the closing element about the axis of rotation. The actuation of the closing element by the actuating element takes place according to the invention indirectly, that is to say via further intermediary components.

According to the invention, the closing element is rotatably mounted in the region of the suction opening. The bearing is preferably detachable, so that the closing element can be removed from the suction opening. The axis of rotation of the closing element lies in or preferably parallel to the suction opening. In the region of the intake opening means in this context that the storage of the closing element in or near the suction port, preferably in the flow direction after the suction port, is provided on the extractor device. The component on which the closing element is held in the axis of rotation is also referred to below as a shaft or rotary shaft.

According to the invention, the actuating element is connected via an actuating mechanism with the closing element and the actuating mechanism has at least one force transmission element which is arranged on an axis which is offset parallel to the axis of rotation. As a force transmission element in this case a component is referred to, which is particularly suitable for transmitting force and / or movement to another component. In the following, for ease of understanding, reference will be made only to the transmission of force. Preferably, the force and / or movement in the transmission is also converted.

By at least one force transmission element is arranged on an axis in the actuating mechanism according to the invention, which is offset parallel to the axis of rotation, on which the closing element is arranged and the actuating element is connected via the actuating mechanism with the closing element, a translation of the force of the User is exercised on the actuator done. Thus, by a slight movement or a small force application to the actuating element, a relatively larger force can be transmitted to the closing element or the closing element can be moved relatively more than the actuating element. In addition, a lever effect can be used by the offset of the two axes, which again reduces the force required to move the closing element.

Preferably, the or the force transmission elements has a toothing. By providing a toothing on the power transmission element (s), a power transmission element can be reliably engaged with other power transmission elements and reliably transmit the power and / or movement. In particular, in the kitchen area in which the extractor device according to the invention is used, this type of force and / or motion transmission is advantageous, since it can easily lead to contamination, for example by the entry of grease. In other types of transmission, such as over belts, it could therefore easily come to a failure of the actuating mechanism, which is not to be feared when using gears. In addition, in the actuating mechanism according to the invention can also be dispensed with electronic components that can otherwise be used for transmission. Since only mechanical components are preferably used in the actuating mechanism according to the invention, the extractor device according to the invention is less susceptible and yet easy to operate by the user.

According to a preferred embodiment, the actuating mechanism has at least two, preferably three force transmission elements. The power transmission elements preferably interact. In the embodiment in which the force transmission elements have teeth, they preferably engage one another. Alternatively or additionally, however, the force transmission elements can also transmit the force to another force transmission element, for example by rigid attachment on a common axis. By providing a plurality of power transmission elements, the ratio between the actuating element and the closing element can be increased. However, by limiting the number of the power transmission members to preferably two or three, the structure of the operating mechanism is relatively simple and thus less susceptible, so that the operation of the closing member can be performed reliably.

According to a preferred embodiment, the actuating mechanism has two axes, which are offset parallel to the axis of rotation, and on each of the axes at least one force transmission element is arranged. This embodiment has the advantage that the size of the individual power transmission elements can be kept low.

According to one embodiment, the actuating element is rigidly connected to at least one of the force transmission elements. Preferably, the actuating element is a button, in particular a push button. In this embodiment, a linear movement or force exerted on the actuating element can be converted into a pivotal or rotary movement or pivoting or rotating force by the actuating element itself. The actuator may be in this case, for example, a rocker switch. This is via an axis, which is also referred to below as the bow axis, with the Housing connected to the extractor device and can be pivoted about the bow axis. At this actuating element may be rigidly fixed as a force transmission element, for example, a bracket, which also pivots about the bow axis. The bracket preferably has an arcuate region in which a toothing is provided. By such a force transmission element can then be a gear which engages in the toothing, to be moved.

Alternatively, however, also the force transmission element, which is rigidly connected to the actuating element, be suitable for converting a straight-line movement or force into a rotational movement. In this way, for example, gears can also be used as further force transmission elements, and finally the closure element can be rotated. The power transmission element which is rigidly connected to the actuating element, in this case, for example, represent a rack.

In a rigidly connected to the actuating element force transmission element, which optionally acts on the closing element via further force transmission elements, there is thus a coupling of the actuating element to the closing element. An advantage of this structure is thus the always existing connection of the actuating element and closing element. Thus, the user of the extractor device can be given a feedback about the position of the closing element by the position of the actuating element.

According to a further embodiment, however, the actuating element is not coupled directly to the closing element. Preferably, in this case, the actuating element is configured separately to the power transmission elements and is arranged so that the actuating element can act on at least one of the force transmission elements. In this embodiment, the actuator may also be a button, such as a push button. The actuator can in this case perform a straight-line movement, which is converted by action, in particular contact with the power transmission element in a pivotal or rotary motion.

By the actuator is decoupled from the power transmission element or the power transmission elements in this embodiment, the position of the actuating element is independent of the position of the closing element. This has the advantage that, for example, when using a button as an actuating element, this can be flush with the top of the extractor device position after actuation and thereby on the one hand a quiet visual appearance of the extractor device is created and on the other hand the ingress of impurities or Settling of impurities in the guide provided for the actuator can be prevented.

In particular, in the case of an actuating element which is decoupled from the at least one force transmission element, the actuating element preferably comprises two feeler parts, which are preferably spring-loaded. Instead of a rocker switch or a rocker switch two pushbuttons can be used, which are arranged in such positions that they can each cause an opposite movement of a power transmission element. This is done by contact of the actuating element, by which the force exerted on the actuating element pressure force is transmitted to the underlying power transmission element. After actuation of the actuating element, this can be brought by a pressure force opposite spring force back to the starting position. In this case, for example, be provided to a key tappet of the actuating element, a compression spring which is supported down against the housing of the extractor device.

According to a preferred embodiment, there is a transmission ratio between the actuating element and the closing element, in which a small movement of the actuating element leads to a greater movement of the closing element. According to one embodiment, the ratio is at least 3, preferably at least 6. The transmission ratio between the movements of the actuating element and the closing element, for example, at a ratio of 3 in this case is 1 to 3, that is, during a movement, in particular rotation through an angle of 1 ° Actuating element, the closing element is rotated by 3 °. This means that only one movement of the actuating element, for example rotation of 20 °, is required for a movement, that is to say rotation of the closing element, about its axis of rotation of 120 °. As a result, the tilt angle or key stroke, which is required on the actuating element, kept low, thus facilitating the actuation of the closing element for the user.

According to one embodiment, the actuating mechanism is configured such that the closing element is provided on a rotary shaft in the axis of rotation, that a force transmission element is a bracket with a toothing and another power transmission element is a double gear and on the rotary shaft, a further gear is provided and that the toothing of Stirrups with one of the gears of the double gear and the another gear of the double gear is engaged with the gear on the rotary shaft.

By this construction, on the one hand, the installation space required for the operating mechanism can be minimized. On the other hand, the actuating mechanism can be provided completely below the plane in which the suction opening of the extractor device is located. The rotary shaft, on which the closing element is provided, is preferably located in the flow direction behind the suction opening, that is, in the case of a hollow ventilation below the level of the suction opening. Thus, at least the axis about which the power transmission element rotates, which is rigidly connected to the actuating element, or on which the actuating element acts directly, be provided above the rotary shaft, but are still in or below the plane of the suction port. In addition, by the force transmitting element, which is rigidly connected to the actuating element, or on which acts directly on the actuating element, constitutes a bracket, the force transmission element can extend from the actuating element exclusively downwards. This would not be possible with a gear. The bracket preferably has a curved or circular segmental shape at least in the region in which the toothing is provided. By this form, on the one hand, the power transmission point of the axis about which the bracket can be rotated or pivoted, spaced, and on the other hand, the force can be transmitted to a engaging in or on the bracket gear. Furthermore, the use of a bracket as a power transmission element has the advantage that in the opening of the bracket further force transmission elements can be provided and thereby the space required for the actuating mechanism space can be reduced.

In the preferred embodiment, the further force transmission element is preferably a double gearwheel. A double gearwheel in this case is a component in which two gearwheels of different diameters or at least with different numbers of teeth are combined to form one component or are rigidly fastened to one another at least on one axis. By the further power transmission element is a double gear, can be done by means of a single axis a translation. From the second gear of the double gear, a transmission of the force and / or movement to the gear can take place, which is provided on the rotary shaft of the closing element. This structure of the actuating mechanism is thus simple and can be realized in a small space. This is advantageous, since thereby the dimension of the extractor device in the longitudinal direction of the suction opening only needs to be increased slightly or for a given space, the suction must be reduced only slightly.

According to a preferred embodiment, the closing element comprises an elongate closing body, which has at least one blocking side which is impermeable to air, and at least one suction side, which is at least partially permeable to air, and the closing body further preferably has a triangular, preferably equilateral, cross-section.

According to a preferred embodiment, the closing body and thus the closing element are brought into at least two rotational positions on the axis of rotation. One of the rotational positions of the closing element in this case represents a blocking position, which is also referred to below as the rest position, rest position or blocking position, and another rotational position an operating position, which is also referred to below as the operating position or operating position, in the locking position, the suction port through closed the closing element. In this position, therefore, no air can enter the suction opening and thus into the extractor device. Also impurities can not enter the extractor device in this position. In the operating position, however, air can enter the extractor device via the intake opening, that is, air can be sucked in via the intake opening.

According to a preferred embodiment, the closing element comprises an elongate closing body, which has at least one blocking side which is impermeable to air, and at least one suction side, which is at least partially permeable to air.

The sides of the closing body, which are also referred to as surfaces or areas, preferably define a space. The closing body can therefore also be referred to as a spatial closing body and represents a hollow body or a hollow profile, which can be made in one piece for example by bending a sheet. In this case, a body is referred to as a spatial closing body, through the sides of which a three-dimensional space is defined. Particularly preferably, at least two sides of the closing body define the three-dimensional space.

According to one embodiment, the closing body has at least one blocking side and at least one suction side, which lie in each case parallel to the axis of rotation of the closing body and together define the space of the closing body. Each of these sides of the closing body preferably has in projection on the suction opening, in which Closing body is provided, a size corresponding to the size of the suction port.

As a blocking side is referred to in the context of the invention, the part of the closing body, which forms a continuous surface of luftundurchlässigem material. The blocking side is therefore also referred to below as a blocking surface. The suction side refers to the part of the closing body in which at least one opening suitable for the air inlet is provided, but the opening preferably covers a smaller area than the area of the suction opening. Particularly preferably, a plurality of openings are provided in the suction side, which are separated from each other, for example by webs.

Preferably, the suction side of the closing body is formed by a grid. As a grating in this case is referred to a material in which at least two openings are provided which are limited by struts or other pieces of material. For example, a grid in the context of the present invention may also be a perforated plate, wherein the openings in the perforated plate may have, for example, round or rectangular cross sections. By using a grid as the suction side, on the one hand, reliable suction of air via the suction side is ensured. On the other hand, but also the stability of the closing body and thus of the closing element against closing elements, in which the suction side is replaced by a through opening, increased. Finally, in the case of a vapor extraction device in which the suction side covers the intake opening in the operating position, it is advantageous if the suction side is designed as a grille, since this can prevent the falling of larger objects, such as parts of the food.

The at least one blocking side and the at least one suction side are preferably parallel to the axis of rotation of the closing body. In this case, the axis of rotation of the closing body is an axis about which the closing body can be rotated in the state mounted in the suction opening. The axis of rotation is in this case in the surface of the intake or preferably parallel thereto. In an elongate closing body, the axis of rotation extends in the longitudinal direction of the closing body.

By providing at least one blocking side on the closing body in this embodiment of the closing element, the suction opening can be closed at least temporarily by this side of the closing body. However, since at least one suction side is additionally provided on the closing body, air can at least temporarily pass into the suction opening of the extractor device and can thus be sucked in by the extractor device. Preferably, the locking side and the suction side are parallel to the axis of rotation of the closing body. In this way, by turning the closing body about the axis of rotation optionally the blocking side or the suction side can be brought into a position in which it covers the suction opening of the extractor device or is located in this. The closing element does not have to be removed from the extractor device during this movement.

The position or position of the closing element and thus also of the closing body, in which the blocking side of the closing body lies in the suction opening, is also referred to as blocking position, blocking position, rest position or rest position. The position or position of the closing element and thus also of the closing body, in which the suction side of the closing body lies in the suction opening, is also referred to as the operating position or operating position. The blocking side of the closing body, which may also be referred to as a blocking region, and the suction side of the closing body, which may also be referred to as the suction region, are also referred to as functional regions or functional surfaces of the closing body.

If the closing body is formed exclusively by the blocking side and the suction side, at least part of the suction side serves for the passage of air into the extractor device in the mounted state of the closing body. Preferably, however, the closing body has at least one passage side in addition to the blocking side and the suction side. The passage side here is the part of the closing body, via which air can pass from the suction opening into the extractor device. The passage side is therefore preferably formed by an opening which forms the largest part of the passage side. This opening may be bounded by webs at the edges.

An advantage of providing a passage side, which is also referred to as a passage region, and which is formed essentially by a through-opening, is in particular that the air resistance can be minimized when flowing through the air by the closing body. The air resistance in this embodiment is therefore lower than in an embodiment in which, except for a blocking region, only one intake region, in which webs are preferably arranged, is provided. In addition, the passage region can also be used for introducing fastening elements, such as a shaft or axle, which are provided on the extractor device in the region of the suction opening.

According to a preferred embodiment, at least the surface corresponds to the blocking side of the closing body in projection onto the suction opening the area of the suction opening. In this way, a reliable closing of the intake opening can be ensured.

The cross section of the closing body can be round or polygonal. In a round cross section, the blocking side and the suction side are formed by curved surfaces. The axis of rotation of a closing element, whose closing body has a round cross-section, in this case preferably extends through the center of the cross section.

According to a preferred embodiment, however, the closing body has a triangular cross section, preferably a cross section of an equilateral triangle. In this embodiment, preferably one of the sides of the triangular shape forms the blocking side, one side the suction side and one side the passage side of the closing body. In this embodiment, the triangle sides can each represent or define planar surfaces. However, it is also possible in this embodiment that at least one of the triangle sides represents a curved surface. By the closing body has a triangular cross-section, the closing element in the rest position of the closing body in which the locking side is facing outwardly, cover the suction through a flat surface and thus can be flush with a provided for example around the suction port frame. By turning the closing element by 120 °, in a triangular, equilateral closing element, the suction side can be easily brought into the position in which it covers the suction opening of the extractor device and lies precisely in this position. In this operating position, air can thus enter the extractor device via the openings in the suction side. Since the blocking side to the suction side is at an angle of 120 ° with a closure member having a triangular, equilateral cross section, in the position in which the suction side covers the suction opening of the extractor device, the blocking side does not or only slightly prevents the suction of air into the extractor device , The blocking side can serve in the operating position of the closing body for Lüftführung in the flow direction behind the suction port.

The third side of the triangular cross section of the closing body preferably forms the passage side of the closing body. In this case, the passage side of the closing body can be completely open and limited at the edges only by one edge of the material of the blocking side and the material of the suction side. However, it is also possible that in particular to increase the stability of the closing body, the edges of the passage side are formed by flanges or webs of the material of the other two sides. These flanges or ridges can be created by bending over the material of the other sides.

An advantage of a triangular, preferably equilateral, shape of the cross section of the closing body is that the length of the legs of the cross section at the same time represents the largest dimension of the cross section. Upon rotation of the closing body about the axis of rotation, which is perpendicular to the cross-sectional area of the closing body, the maximum dimension, which lies in a plane at a distance from the axis of rotation, is always less than or equal to the length of one of the legs of the triangular cross-section. Thus, the closing body can be rotated in a suction opening whose width corresponds to the length of one of the legs of the triangular cross section of the closing body. In this case, the closing body does not abut against the edges of the suction opening and, in the positions in which one of the legs lies in the suction opening, still completely covers the suction opening. For a quadrangular cross-section of the closing body, for example, this is not possible since the diagonal represents a larger dimension than the side lengths of the quadrilateral.

Preferably, the closing element of the extractor device is configured such that the closing element comprises a closing body which has at least one blocking side and at least one suction side, each lying parallel to the axis of rotation of the closing body and which together define the space of the closing body, and in that at least one of End sides of the closing element is provided at least part of a fastening device for a rotatable mounting of the closure element on the extractor device in the region of an intake opening of the extractor device.

Preferably, at least one part of a fastening device for a rotatable attachment of the closing element to the extractor device is thus provided on at least one of the end faces of the closing element in the region of an intake opening of the extractor device. In this case, the sides of the closing element are designated as the front side, which define the space in the closing body together with the at least one blocking surface and the at least one suction side. In an elongated, that is, longitudinally extending, closing body, the end faces in the region of the end faces, that is, the longitudinal ends of the closing body are arranged. More preferably, the end faces are perpendicular to the suction side and the blocking side of the closing body. As a fastening device one or more means is referred to within the meaning of the invention, which can cooperate with the suction port and / or therein or provided thereon further means to a Retaining the closing element on the extractor device in the region of the intake opening to effect at least temporarily. The fastening device preferably serves for the releasable attachment of the closing element to the extractor device, in particular in the region of the suction opening of the extractor device.

The at least one part of the fastening device, which is provided on the closing element, preferably lies in the axis of rotation of the closing element. The axis of rotation lies with the elongate closing element in the longitudinal direction of the closing element. In the mounted state of the closing element on the extractor device, the part of the fastening device is preferably downstream of the suction opening in the flow direction. In a Muldenlüftung the part of the fastening device is therefore in the mounted state below the suction port. The distance to the suction opening is dimensioned such that in at least one rotational position of the closing element, one side of the closing element lies in the surface of the suction opening.

The fastening of the closing element on the extractor device, according to the invention constitutes a rotatable attachment. Thus, the closing body of the closing element can be rotated about its axis of rotation in the suction opening, the fastening device is preferably in the axis of rotation of the closing body.

According to a preferred embodiment, at least a part of the fastening device of the closing element is an insertion device, which can also be referred to as a push-in device. Under Einschubbeziehungsweise insertion device is referred to in the sense of the present invention, a device over which a connection between the closing element and the extractor device can be generated by translational movement of the closing element with respect to the suction port. Thus, the closing element can be connected to the extractor device in the region of the intake opening by inserting the closing element into the intake opening.

According to a preferred embodiment, at least part of the fastening device of the closing element comprises at least one insertion opening. This can be provided as a gap or slot in the end face of the closing element and engage with a corresponding axis or a corresponding projection on the inside of the suction opening or in the region of the suction opening. For fixing the closing element in the end position of the insertion opening, one or more locking elements may be provided. Alternatively, it is also possible that the closing element is held exclusively by the shape of the insertion opening on the axis or the projection of the extractor device.

An advantage of the provision of an insertion opening is that a simple insertion and removal of the closing element in the region of the suction opening on the extractor device, in particular by insertion into the suction opening is possible.

According to a preferred embodiment, at least a part of the fastening device is designed for the transmission of rotational power to the closing element and preferably also for the rotational force transmission of the closing element. This part of the fastening device may be the part formed by a slide-in device. Alternatively or additionally, however, it is also possible that the part of the fastening device which serves to transmit rotational force is formed, for example, by an insertion opening into which a shaft or a projection in the extractor device can be introduced in the region of the suction opening. The insertion opening preferably has a cross-section which is not rotationally symmetrical. The insertion of a shaft into the insertion takes place, for example, in that the closing element is guided to the rotation axis inclined to the shaft or the projection and this is inserted in the inclined position in the insertion. In this embodiment, such an insertion opening is preferably provided only on one of the end sides of the closing element and on the opposite end face, for example, a slot or other insertion device is provided.

The part of the fastening device, which is designed for the transmission of rotational power to the closing body, preferably has a cross section which deviates from a rotationally symmetrical cross section. In particular, the cross section of this part of the fastening device can be formed by an opening in the end face, which has a round cross section with a flattening. Alternatively or additionally, the part of the fastening device which is designed for torque transmission, be designed so that its dimension is smaller than the dimension of a corresponding part of the fastening device, for example a shaft which is provided on the extractor device, in particular in the region of the suction port and at least partially protruding into this. In this case, for example, an opening may be provided with a round cross-section in the end face whose diameter is equal to or smaller than the diameter of the shaft or the projection on the extractor device, which engages in this opening for fastening the closing element.

An advantage of the provision of an insertion opening is that the possibility of a force transmission to the closing element is given simultaneously with a holder of the closing element. As a result, a movement, in particular a rotation, of the closing element, for example, by the actuating mechanism allows.

According to a preferred embodiment, the end faces of the closing element are offset inwards relative to the longitudinal ends of the closing body. This offset creates a projection that can serve as a grip for the user. In order to be able to remove the closing element from the suction opening, for example for cleaning purposes or for accessing filter elements which are arranged behind the closing element in the flow direction, it is necessary for the user to be able to hold the closing element. For this purpose, the handle created by said projection can serve. This embodiment has the advantage that on the outside of the closing element no separate handles or recesses must be provided. On the one hand, this improves the visual impression of the closing element in the different positions, in particular the operating position and the rest position. On the other hand, can be provided by the fact that no engagement openings must be provided on the locking side, a continuous surface and the openings in the suction side can be chosen smaller than would be necessary for engagement by means of the fingers.

According to one embodiment of the extractor device, the extractor device has a fastening device for fastening the closing element in the region of the suction opening and the axis of the fastening device lies in the flow direction behind the suction opening. The attachment axis is preferably formed by a shaft or an axis which extends in plan view of the suction opening from the edge of the suction opening into the surface of the suction opening. The attachment axis can extend over the entire length of the suction opening. But it is also possible that in each case an axis or shaft is provided at the opposite ends of the suction, which ends in the surface of the suction port. The attachment axis lies in the axis of rotation of the closing element.

According to one embodiment, the extractor device is characterized in that the axis of rotation of the closing element lies in the center of gravity of the cross section of the closing body and is preferably arranged in the flow direction behind the suction opening on the extractor device.

The attachment axis is preferably in the mounted state of the closing element in the center of gravity of the cross section of the closing body. Preferably, the closing element has end faces in the region of the longitudinal ends, which can also be referred to as spacers and via which the closing body is held on the fastening axis. In or on the end faces parts of a fastening device are provided, which can cooperate with the mounting axis on the extractor device for rotatable mounting of the closing element. In the embodiment in which the attachment axis lies in the center of gravity of the cross section of the closing body, thus also the parts of the fastening device are located at the end faces in this center of gravity. This orientation of the parts of the fastening device on the closing element facilitates the rotation of the closing element about its axis of rotation and thus the different positions or positions of the closing element can be set by the user without much effort. In addition, by this orientation of the fastening device and the distance between the center of gravity and the sides of the closing body in several angles equal. For example, in the case of an equilateral, triangular cross section, the distance of the three legs from the center of gravity is the same. Thus, it can be ensured that always one side of the closing body can be arranged in the suction opening.

The extractor device is preferably designed such that in the region of the intake opening it has at least one rotational force transmission element in the form of a shaft as part of the fastening axis or as a fastening axis. By means of this torque transmission element, the rotational force can be transmitted to the closing element via the part of the fastening device of the closing element with which the rotary force transmission element cooperates, and this can be brought or held in the different positions, namely the operating position, rest position and removal position. Also forces acting on the closing element can be transferred to the torque transmission element. The torque transmitting member is preferably offset from the suction port at a distance downward. Thus, the axis of rotation of the closing element is also not in the plane of the suction port. As a result, a flush closing or covering of the suction opening can be made possible by the blocking side or the suction side of the closing element.

Preferably, the extractor device is a trough venting device with at least one horizontal suction port Trough ventilation, the air is sucked down through the suction opening, that is, the fan is arranged below the suction opening in the extractor device.

The advantages of the present invention can be used particularly well in hollow vents with a horizontally arranged intake opening, since the occurrence of contaminants, especially of liquids, is a particular problem there.

The invention will be described again below with reference to the accompanying figures. Show it:

1 FIG. 3: a perspective view of an embodiment of the extractor device according to the present invention with an embodiment of the closure element in a removal position, FIG.

2 a perspective view of a portion of the extractor device according to 1 with an embodiment of the closing element in a rest position of the closing element;

3 a perspective view of a portion of the extractor device according to 1 with an embodiment of the closing element in an operating position of the closing element;

4 a perspective view of a first embodiment of the actuating mechanism in a rest position of the closing element;

5 a schematic front view of a second embodiment of the actuating mechanism in a rest position of the closing element;

6 a perspective view of an embodiment of the closing element;

7 a partial perspective view of a portion of the suction port of an embodiment of the extractor device without closing element; and

8th a partial perspective view of another portion of the suction port of an embodiment of the extractor device without closing element.

In 1 is an embodiment of the extractor device according to the invention 1 shown. In this embodiment, the extractor device 1 a so-called Muldenlüftung or table ventilation. The suction port 10 the extractor device 1 is in the illustrated embodiment between two cooking zones of a cooker 2 arranged and lies in the work surface. From the intake 10 the air is sucked down via a fan (not shown) arranged below the cooking surface plane. The intake opening 10 is from a frame 100 surround. The frame 100 represents the top of a case 103 (please refer 2 ) of the extractor device 1 dar. In the intake 10 is a closing element 11 arranged. In the 1 is from the closing element 11 only part of the closing body 115 to see.

The structure of the embodiment of the closing element 11 is in the 6 shown in more detail. As is clear from this 6 results, there is the closing element 11 from an elongated closing body 115 which has a triangular cross-section. The closing body 115 is formed in particular by a bent sheet metal. The three sides of the closing body 115 each have a different design. One side of the closing body 115 is formed by a continuous piece of sheet metal. This page is the blocking page 110 of the closing body 115 dar. A second side of the closing body 115 is as a grid 1110 designed and forms the suction side 111 of the closing body 115 , The grid 1110 is formed by placing in the sheet metal of the closing body 115 Openings are introduced. Between these openings are webs. The third side of the triangular closing body 115 is largely open in the illustrated embodiment. Only at the lateral edges are webs of the suction side 111 and the blocking side 110 in the third page about. This third, open page is also called the passage page 112 of the closing body 115 designated.

The closing body 115 has an elongated shape, that is, extends in the direction perpendicular to the triangular cross-section in the length. In the area of the longitudinal ends of the closing body 115 are frontals 113 . 114 intended. These are perpendicular to the sides of the closing body 115 and are in the illustrated embodiment to the longitudinal ends of the closing body 115 offset inwards. In a front page 113 a central opening is provided which forms part of the fastening device and an insertion opening 1130 represents. The insertion opening 1130 is formed in the illustrated embodiment as a largely circular opening with a flattening. In the, the front 113 opposite, front side 114 is an insertion opening as part of the fastening device 1140 intended. This insertion opening 1140 represents a slot extending from the passage side 112 out to the middle of the front 114 extends. The axis of rotation of the closing body 115 runs through the middle of the front side 114 and the insertion opening 1130 that is in the middle of the front 113 located.

Through the three sides of the closing body 115 is in the closing body 115 defines a space, that is, the closing body forms a hollow body. To the longitudinal ends of this space is through the front sides 113 and 114 limited.

That through the closing body 115 and the front ends 113 . 114 formed closing element 11 can into the intake 10 a fume extraction device 1 be introduced. As in 7 is shown in the housing 103 the extractor device 1 at one of the longitudinal ends in the region of the intake opening 10 a wave 101 provided in the interior of the housing 103 extends horizontally. The wave 101 has a largely circular cross section with a flattening corresponding to the cross section of the insertion 1130 on. At the opposite longitudinal end of the housing 103 in the area of the intake opening 10 is an axis 102 provided, which is also in the interior of the housing 103 extends. The axis 102 and the wave 101 are to the top of the housing 103 at the frame 100 is provided, which is the suction port 10 surrounds, offset downwards. This is in 8th shown. The amount to which the axis 102 and the wave 101 to the top of the frame 100 are offset in the illustrated embodiment, the smallest distance between the insertion 1130 and the outer surface of the locking side 110 or the suction side 111 of the closing element 11 ,

For introducing the closing element 11 this will be with the passage side 112 down and with the front side 113 forward into the intake 10 introduced and the shaft 101 in the insertion opening 1130 introduced. Subsequently, the opposite end of the closing element 11 lowered. As a result, the insertion opening gets 1140 with the axis 102 engaged and the axis 102 can in the slot, this slide-in opening 1140 forms, slip upwards. Once the axis 102 the upper end of the insertion opening 1140 has reached is the closing element 11 in the extractor device 1 and in particular in the region of the intake opening 10 held. This position, which in 1 is shown and in the passage side 112 of the closing element 11 directed downwards, is also referred to as removal position. In this position, the top of the roof protrudes, through the barrier side 110 and the suction side 111 is formed, via the suction port 10 and especially about the frame 100 upwards. The user can in this area in the longitudinal ends of the closing body 115 that is, in between the longitudinal ends and the end faces 113 and 114 formed supernatants of the closing body 115 engage and the closing element 11 by opposing movements to the just described movements from the extractor device 1 remove.

Should the extractor device 1 can be used, the user can the closing element 11 around the axis of rotation in which the insertion hole 1130 and the insertion opening 1140 lie, turn. From the removal position 1 this is the closing element 11 turned counterclockwise until the suction side 111 of the closing body 115 is directed upward. This position, which is also referred to as the operating position, is in 3 shown. Due to the triangular cross section of the closing body 115 and the distance between the insertion opening 1130 and the outside of the suction side 111 , is the outside of the suction side 111 in this position, flush with the top of the frame 100 , However, it is also possible that the outside of the suction side 111 opposite the top of the frame 100 is slightly offset down. In the operating position, the blocking side protrudes 110 of the closing body 115 at an angle, in particular of 120 °, down into the housing 103 under the intake opening 10 , This will cause the air to flow through the blower (not shown) into the housing 103 is sucked in, after passing through the suction side 111 directed and passes through the passage side 112 of the closing body 115 in the case 103 and to the fan. Will the extractor device 1 not used, the user can the closing element 11 in the in 2 bring shown rest position. In this rest position is the blocking side 110 of the closing body 115 directed upwards. To the closing body 115 and thus the closure element 11 From the operating position to bring to the rest position, the user turns in the illustrated embodiment, the closing element 11 120 ° clockwise. The blocking side 110 of the closing body 115 closes in the rest position, the suction port 10 Completely. As a result, the penetration of contaminants, in particular in the form of liquids, can be reliably prevented.

Adjusting the different positions of the closing element 11 , in particular the turning of the closing element 11 , is preferably done manually. For this purpose, an actuating mechanism according to the invention 3 intended.

Embodiments of such an actuating mechanism 3 are in the 2 to 5 shown schematically.

In the in 2 to 4 is a first embodiment and in 5 a second embodiment of the actuating mechanism 3 shown. As it turned out 4 results, the actuating mechanism comprises 3 an actuator 30 which is a rocker switch in this embodiment. Furthermore, the actuating mechanism comprises 3 a hanger 31 with a toothing provided on the inside of a bent area 310 , The Axis around which the hanger 31 can pivot and also as a bow shaft 34 is referred to, is above the axis of rotation of the rotary shaft, which is also called a shaft 101 is called, the closing element 11 intended. The coat hanger 31 however, extends below the shaft 101 , Thus, the temple surrounds 31 the wave 101 , Furthermore, inside the bracket 31 an intermediate axis 35 provided on the in the illustrated embodiment, a double gear 33 with an outer smaller gear, hereinafter also referred to as outer gear 330 is referred to, and a larger inner gear, hereinafter also referred to as inner gear 331 is designated attached. The double gear 33 is rigid with the intermediate axis 35 connected. The two gears 330 and 331 are in the illustrated embodiment before as separate gears, but can also be summarized in a one-piece double gear.

Finally, the actuating mechanism includes 3 a gear wheel that is on the rotary shaft 101 of the closing element 11 is rigidly attached. This gear is also referred to below as a shaft gear 32 designated.

The power transmission takes place in the illustrated embodiment as follows. By pressing, in particular pivoting of the actuating element 30 will be with this on the bow axle 34 rigidly connected straps 31 emotional. As a result, by means of the toothing 310 the force on the outer gear 330 of the double gear 33 transfer. Because the outer gear 330 with the inner gear 331 on the intermediate axle 35 is rigidly connected, thereby also the inner gear 331 turned. This in turn attacks with the wave gear 32 on the wave 101 and thus moves them. Because the wave 101 with the closing element 11 for example via the insertion opening 1130 is rigidly connected, by the rotation of the shaft 101 also the closing element 11 turned.

In the in 4 shown position of the actuating mechanism 3 is preferably the closing element 11 in the resting position. This is in 2 shown. In this position is the blocking side 110 of the closing element 11 in the intake 10 , In the embodiment of the closing element 11 , in the 6 is shown here is the suction side 111 of the closing element 11 right then to the blocking side 110 down into the case 103 pointing ahead. To the closing element 11 from the resting position to the in 3 shown operating position in which the suction side 111 of the closing element 11 in the intake 10 is, the user becomes the actuator 30 serve. By pressing on the right side of the designed as a rocker button actuator 30 takes place via the actuating mechanism 3 a rotation of the closing element 11 to the left. This causes the suction side 111 in the position in which this the intake 10 covers. In the illustrated embodiment of the closing element 11 this is a rotation of the closing element 11 required by 120 °. Due to the through the actuating mechanism 3 Preferably generated translation is only a pivoting of the actuating element for this rotation 30 required by 20 °. Therefore, the protrusion around the left side of the actuators 30 over the plane of the suction opening 10 upwards protrudes low and the actuator 30 thus hinders the user of the extractor device 1 Not.

In order to bring the locking elements back into the rest position, the user only needs the actuating element 30 Press down on the left side until the top of the actuator 30 is again horizontal. When switching between the rest position and the operating position passes through the closing element 11 the removal position. Since the setting of the rotational positions of the closing element 11 is done by mechanical elements, the user can on reaching the removal position, the movement of the actuating element 30 stop, that is, do not press this further and the closing element 11 can be taken in this position.

In the 5 shown second embodiment of the actuating mechanism 3 differs only slightly from the first embodiment. Therefore, only the components and operations of the second embodiment that differ from the first or that are necessary for understanding the second embodiment will be described below. The other components and functions will not be explained again.

In the actuating mechanism 3 The second embodiment is the actuator 30 from two key parts 300 . 301 , which are also referred to as subkeys. The button parts 300 . 301 are left and right of the bow axis 34 arranged. Between the button parts 30 . 301 a cover (not shown) may be provided through which the bow shaft 34 and their suspension are covered upwards. The button parts 300 . 301 are arranged so that each one of them with a first shoulder 311 of the temple 31 and the other with the other side of the bow axle 35 lying shoulder 312 of the temple 31 can come into contact. In particular, the key parts 300 . 301 on the tops of the shoulders 311 . 312 of the temple 31 be pressed and so to a pivoting of the bracket 31 around the bow axle 34 to lead.

In the illustrated second embodiment, the bracket 31 asymmetrically shaped. In particular, the in the 5 right shoulder 312 formed as a straight part while the left shoulder 311 has an outward curvature. The key part is also corresponding 300 at the bottom just formed and the button part 301 arched.

At the button parts 300 . 301 is each a spring element 36 provided, the spring force acts counter to the direction of Tastenhubs. The spring elements 36 are preferably compression springs, for example, helical compression springs. After an actuation of the button part 300 . 301 causes the spring element 36 thus, that the button part 300 . 301 is brought back to its original position.

Furthermore, in the second embodiment, the inner gear 331 of the double gear 33 a smaller diameter than that of the first embodiment. In addition, it is on the shaft 101 instead of a full gear, a shaft half gear 320 provided in which only a part of the circumference a toothing is provided.

The invention is not limited to the illustrated embodiments. Non-limiting examples of deviations from the illustrated embodiment will be described below.

For example, the fastening device may be configured differently than shown. For example, it is possible that in each case an insertion opening is provided in both end faces and at the upper ends of the insertion opening in each case a latching device is arranged, by means of which a respective shaft is held in the end face and exerted on the closing element or by the closing element on the rotational force can.

Furthermore, for example, the shape of the closing body may differ from the shape shown. For example, the closing body can have a rectangular or round cross section.

The design of the suction side and the passage side of the closing body are not limited to the embodiments shown. For example, the suction side may be formed by a perforated plate with round openings.

Also, the actuating mechanism may differ from that shown, wherein, for example, the power transmission elements can be configured differently or arranged. The number of power transmission elements is not limited to the number provided in the embodiments shown.

The present invention has a number of advantages. In particular, an electric drive and the associated components are not required.

Instead, the invention provides a purely mechanical closing element, which is simple and reliable to use and results in a flat surface both in the closed state, that is in the locked position, as well as in the open state, that is in the operating position. Thus, no protruding elements hinder cooking on the surrounding hob.

LIST OF REFERENCE NUMBERS

1

 Exhaust hood

10

 suction

100

 frame

101

 Shaft (rotary shaft)

102

 axis

103

 casing

11

 closing

110

 blocksite

111

 suction

1110

 grid

112

 Passage side

113

 front

1130

 Insertion opening (part of the fastening device)

114

 front

1140

 Insertion opening (part of the fastening device)

115

 closing body

2

 stove

3

 actuating mechanism

30

 actuator

300

 key part

301

 key part

31

 Bracket (power transmission element)

310

 gearing

311

 shoulder

312

 shoulder

32

 Wave gear (power transmission element)

320

 Worm half gear (power transmission element)

33

 Double gear (power transmission element)

330

 outer gear (power transmission element)

331

 inner gear (power transmission element)

34

 Ironing axis

35

 intermediate shaft

36

 spring element

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102007002241 A1 [0002]

Claims (10)

Vapor extraction device, in particular trough ventilation device, with at least one suction opening ( 10 ), at least one closing element ( 11 ) for at least temporarily closing the suction opening ( 10 ) located in the area of the intake ( 10 ) is rotatably mounted about an axis of rotation, and an actuating element ( 30 . 300 . 301 ) for actuating the closing element, characterized in that the actuating element ( 30 . 300 . 301 ) via an actuating mechanism ( 3 ) with the closing element ( 11 ) and the actuating mechanism ( 3 ) at least one force transmission element ( 31 . 32 . 33 ) on one axis ( 34 . 35 ) is arranged, which is offset parallel to the axis of rotation. Vapor extraction device according to claim 1, characterized in that the force transmission element ( 31 . 32 . 33 ) a gearing ( 310 ) having. Vapor extraction device according to one of claims 1 or 2, characterized in that the actuating mechanism ( 3 ) two axes ( 34 . 35 ), which are offset parallel to the axis of rotation, and on each of the axes at least one force transmission element ( 31 . 33 ) is arranged. Vapor extraction device according to one of claims 1 to 3, characterized in that the actuating element ( 30 ) with at least one of the force transmission elements ( 31 ) is rigidly connected. Vapor extraction device according to one of claims 1 to 3, characterized in that the actuating element ( 30 ) to the power transmission elements ( 31 . 32 . 33 ) is configured separately and is arranged so that the actuating element ( 30 ) on at least one of the power transmission elements ( 31 ) can act. Vapor extraction device according to claim 5, characterized in that the actuating element ( 30 ) two button parts ( 300 . 301 ), which are preferably spring loaded. Vapor extraction device according to one of claims 1 to 6, characterized in that between the actuating element ( 30 ) and the closing element ( 11 ) a translation of at least 3, preferably of at least 6 exists. Vapor extraction device according to one of claims 1 to 7, characterized in that the closing element ( 11 ) on a rotary shaft ( 101 ) is provided in the axis of rotation that a force transmission element a bracket ( 31 ) with a toothing ( 310 ) and another power transmission element a double gear ( 33 ) and on the rotary shaft ( 101 ) another gear ( 32 ) and that the gearing ( 310 ) of the bracket ( 31 ) with one of the gears ( 330 . 331 ) of the double gear ( 33 ) and the further gear ( 331 . 330 ) of the double gear ( 33 ) with the gear ( 32 ) on the rotary shaft ( 101 ) is engaged. Vapor extraction device according to one of claims 1 to 8, characterized in that the closing element ( 11 ) an elongated closing body ( 115 ), the at least one blocking side ( 110 ), which is impermeable to air, and at least one suction side ( 111 ), which is at least partially permeable to air, and that the closing body ( 115 ) preferably has a triangular, preferably equilateral, cross-section. Vapor extraction device according to one of claims 1 to 9, characterized in that the axis of rotation of the closing element ( 11 ) in the center of gravity of the cross section of the closing body ( 115 ) and preferably in the flow direction behind the suction port ( 10 ) on the extractor device ( 1 ) is arranged.

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